DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.7, DOMPurify IN_PLACE sanitization could skip shadow contents attached to an element inside <template>.content, allowing attacker-controlled markup such as event handlers, JavaScript URLs, or scripts to survive and execute when an application cloned and inserted the sanitized template. This issue is fixed in version 3.4.7.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/cure53/DOMPurify/commit/ca30f070c360df162a3e3848e80e6fd3c9e74bff Patch
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-rp9w-3fw7-7cwq Vendor Advisory, Exploit
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-rp9w-3fw7-7cwq Vendor Advisory, Exploit
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.3 · cure53NVD modified 2026-10-24 21:10
Affected (CPE criteria) 1
cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:*
References 4
- https://github.com/cure53/DOMPurify/commit/ca30f070c360df162a3e3848e80e6fd3c9e74bff Patch
- https://github.com/cure53/DOMPurify/releases/tag/3.4.7 Release Notes
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-rp9w-3fw7-7cwq Vendor Advisory, Exploit
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-rp9w-3fw7-7cwq Vendor Advisory, Exploit